/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Other licenses:
 * -----------------------------------------------------------------------------
 * Commercial licenses for this work are available. These replace the above
 * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
 * database integrations.
 *
 * For more information, please visit: http://www.jooq.org/licenses
 *
 *
 *
 *
 *
 *
 *
 *
 *
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 *
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 *
 *
 *
 *
 */
package org.jooq.impl;

import static org.jooq.impl.DSL.one;
import static org.jooq.impl.DSL.select;
import static org.jooq.impl.Keywords.K_NULL;
import static org.jooq.impl.Keywords.K_SELECT;

import org.jooq.Context;
import org.jooq.Field;

/**
 * @author Lukas Eder
 */
final class ConstantSortField<T> extends CustomField<T> {

    ConstantSortField(Field<T> field) {
        super(field.getUnqualifiedName(), field.getDataType());
    }

    @Override
    public void accept(Context<?> ctx) {
        switch (ctx.family()) {

















            case DERBY:
            case HSQLDB:
            case POSTGRES:
                ctx.sql('(').visit(select(one())).sql(')');
                break;

            default:
                ctx.visit(DSL.NULL().sortDefault());
                break;
        }
    }
}
